Nan
You mentioned that you didn't know when Margaret's husband died. Robert Marshall, farmer usual residence Chamberfield Farm Dunfermline, husband of Margaret Allan, died October 31st 1943 at 20 Buchanan Street, Dunfermline. He was 72 years of age. Informant son Robert. I'm pretty sure that Buchanan St address would be the Garthdee Nursing Home which closed years ago. Robert senior's parents listed as John Marshall, farmer, and Mary Marshall m.s. Waddell both deceased.
Dod